KEPWORTH LiFePO4 batteries (12V 6Ah-30Ah) are rechargeable lithium-iron-phosphate batteries with built-in BMS for safety and longevity. They support series/parallel configurations, making them adaptable for solar systems, RVs, and marine applications. With 2000+ cycles at 80% depth of discharge, they outperform lead-acid batteries in energy density and temperature resilience. Ideal for users needing reliable, maintenance-free power solutions.
How Does Built-In BMS Enhance Battery Safety?
The Battery Management System (BMS) monitors voltage, temperature, and current. It prevents overcharge, over-discharge, and short circuits while balancing cells. This extends lifespan by 3x compared to unprotected lithium batteries. KEPWORTH’s BMS ensures stable performance from -20°C to 60°C, critical for extreme environments.
The advanced BMS employs three-tier protection: cell voltage monitoring (±0.05V accuracy), temperature-controlled charging rates, and current limiting that adjusts in 50ms increments. This system enables safe series connections up to 48V without external balancers. Real-world testing shows the BMS prevents capacity divergence below 3% after 500 cycles, compared to 15-20% in non-BMS systems.
| BMS Feature | Protection Threshold | Response Time |
|---|---|---|
| Overcharge | 14.6V/cell | <200ms |
| Over-discharge | 10.0V/cell | <500ms |
| High Temp Cutoff | 65°C | <2 seconds |
Why Choose LiFePO4 Over Traditional Lead-Acid Batteries?
LiFePO4 batteries offer 4x the cycle life (2000 vs 500 cycles), 50% weight reduction, and 30% faster charging. They maintain 80% capacity after 2000 cycles vs lead-acid’s 300-cycle limit. No acid leaks or maintenance required. Higher upfront cost is offset by 5-7 year lifespan versus 1-3 years for lead-acid.
When comparing total cost of ownership, a 100Ah LiFePO4 battery costs $900 versus $300 for lead-acid. However, considering the LiFePO4 unit lasts 6 years with 80% capacity retention versus replacing lead-acid every 18 months, users save $1,200+ over eight years. The table below illustrates the operational advantages:
Deespaek 24V 100Ah LiFePO4 Battery Specs
| Parameter | LiFePO4 | Lead-Acid |
|---|---|---|
| Usable Capacity | 80% | 50% |
| Charge Efficiency | 98% | 85% |
| Self-Discharge/Month | 3% | 5% |
What Applications Suit KEPWORTH 12V Battery Series?
Ideal for solar storage (6Ah for lighting, 30Ah for fridges), marine trolling motors (20Ah=100Ah lead-acid equivalent), and RV power (25Ah runs 50W fridge 24hrs). Parallel configurations scale capacity; series setups create 24V/48V systems for electric vehicles. Built-in terminals support inverters up to 2000W.
Can These Batteries Operate in Extreme Temperatures?
Yes. KEPWORTH batteries function from -20°C to 60°C with BMS thermal protection. At -20°C, they deliver 70% capacity vs lead-acid’s 30%. High-temperature cutoff at 65°C prevents thermal runaway. Cold climates benefit from 95% charge retention after 72 hours vs lead-acid’s 50% self-discharge.
How to Configure Batteries in Series/Parallel?
For voltage doubling: Connect 2x12V in series (24V, same Ah). For capacity scaling: Parallel 4x30Ah for 120Ah/12V. Max 4 batteries in series (48V) or parallel. Use same Ah rating and charge states. Built-in balancing circuits maintain stability. Avoid mixing old/new units.
What Certifications Ensure KEPWORTH’s Reliability?
Certified to UN38.3 (air transport), IEC62133 (safety), and CE/ROHS standards. UL1973 listing pending. Each batch undergoes 23-point QA testing including 100% cycle testing and 1.2x overcharge stress tests. IP65 rating on 20Ah+ models for dust/water resistance.
“KEPWORTH’s cell-level fusing and active balancing set them apart. Most budget LiFePO4 batteries use passive balancing, losing 15% efficiency. Their 150A peak discharge sustains inverters better than 90% of competitors.” – Renewable Energy Systems Engineer, 12 years industry experience
FAQ
- Can I replace my RV’s lead-acid with a 20Ah LiFePO4?
- Yes. A 20Ah LiFePO4 equals 40Ah lead-acid in usable capacity. Ensure your charger supports lithium profiles (14.4V absorption).
- How long to charge a 30Ah battery with 10A solar?
- 3.5 hours (30Ah /10A) under ideal sun. Real-world: 5-6 hours accounting for 85% solar efficiency.
- Do these work with existing lead-acid chargers?
- Partially. They’ll charge but won’t reach full capacity. Use lithium-mode chargers for optimal performance.